CVE-2026-56257: Capgo - Authorization Bypass in App Ownership Transfer via Direct PostgREST Update

Severity: high (CVSS 7.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-24 · updated 2026-06-25
Weakness: CWE-284

Description

Capgo before 12.128.2 allows direct patching of public.apps.owner_org through PostgREST, bypassing the transfer_app() workflow and creating split-brain ownership. Attackers can directly update apps.owner_org while leaving app_versions.owner_org unchanged, enabling old-org keys to retain access to version data while new-org keys control the app record.

Affected products

Capgo: before 12.128.2 — fixed in 12.128.2

How to fix

Upgrade to a fixed version: Capgo 12.128.2. Check the vendor advisory for mitigations.

References

https://github.com/Cap-go/capgo/security/advisories/GHSA-v9jp-r5wh-qqcp
https://www.vulncheck.com/advisories/capgo-authorization-bypass-in-app-ownership-transfer-via-direct-postgrest-update
https://github.com/Cap-go/capgo/security/advisories/GHSA-v9jp-r5wh-qqcp

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